The names of some famous persons by the name Felix (or its variants) are:

Felix Mendelssohn, born on 3 February, a famous composer. Felix Mendelssohn's background: Born in 1809. The German composer was often thought of as one of music's underrated geniuses, he wrote in just about every musical form, but his most famous compositions are possibly the incidental music (including the 'Wedding March') to A Midsummer Night's Dream and Fingal's Cave overture.

Felix Christian Klein, born on 25 April, a famous mathematician. Felix Christian Klein's background: A German mathematician, known for his work in group theory, function theory, non-Euclidean geometry, and on the connections between geometry and group theory.

Félix Sánchez, born on 30 August, a famous athlete. Félix Sánchez's background: A track and field athlete from New York, New York (U.S.).